What is a consideration when breaking glass in a door?

When breaking glass in a door, one of the critical considerations is how it affects the flow path of smoke and heat. Disrupting the flow path is essential because fire dynamics indicate that smoke and heat move through openings, and breaking a door's glass can change the behavior of these elements significantly.

When glass is broken, it can create additional openings that might allow heat and smoke to move more freely, potentially affecting the conditions inside a structure. This can influence the fire's intensity and the safety of both victims and firefighters. Understanding and controlling the flow path is crucial for effective fire suppression and for providing a safe environment during rescue operations. This consideration ties directly into the strategies firefighters employ to manage smoke and heat spread during a fire incident.